Closed loop question...
24-03-2008, 11:50 AM
#1
Closed loop question...
I'm taking my car to MSD in a couple of weeks time for a live map and closed loop fuelling , i was just wondering what sort of differences i should expect as far as the closed loop is concerned?
Does it make the car drive differently etc??
Cheers, Karl
Does it make the car drive differently etc??
Cheers, Karl
24-03-2008, 11:57 AM
#2
saff is working!!!...atm
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.............ur dodgy old saff will drive like a brand new mondeo when it comes out of msd.................cloosed loop system helps the engine to stay clean and should give it a longer life.........aswell as 30mpg if u drive it off boost..........
24-03-2008, 12:39 PM
#6
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im glad to hear this as im having it done on my zetec turbo, what is needed a wideband sensor and? ive got the ecu to run it but dont know what is required? cheers
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24-03-2008, 01:32 PM
#12
just finding my feet
tbh getting your car back from MSD transforms the car anyway !!!
paul look into what a closed loop conversion actually does, its for part throttle driving/cruisng on motorways off boost, on boost the car will still be bad on fuel !!!
the remap will affect the way the car drives if theres a bad map on the car ( cossie motorsport chip on greys for example)
my car felt ALOT better when it came back from MSD and it just had a custom chip fitted to it, no closed loop ect, he just tided the fueling and ignition maps and the car performed better !!!
paul look into what a closed loop conversion actually does, its for part throttle driving/cruisng on motorways off boost, on boost the car will still be bad on fuel !!!
the remap will affect the way the car drives if theres a bad map on the car ( cossie motorsport chip on greys for example)
my car felt ALOT better when it came back from MSD and it just had a custom chip fitted to it, no closed loop ect, he just tided the fueling and ignition maps and the car performed better !!!
24-03-2008, 02:19 PM
#14
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So whats the diffrence to the standard 4x4 cossie closed loop? not stiring the shit but have allways wondered, is this just retro fit for the older cars?
24-03-2008, 03:53 PM
#18
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tbh getting your car back from MSD transforms the car anyway !!!
paul look into what a closed loop conversion actually does, its for part throttle driving/cruisng on motorways off boost, on boost the car will still be bad on fuel !!!
the remap will affect the way the car drives if theres a bad map on the car ( cossie motorsport chip on greys for example)
my car felt ALOT better when it came back from MSD and it just had a custom chip fitted to it, no closed loop ect, he just tided the fueling and ignition maps and the car performed better !!!
paul look into what a closed loop conversion actually does, its for part throttle driving/cruisng on motorways off boost, on boost the car will still be bad on fuel !!!
the remap will affect the way the car drives if theres a bad map on the car ( cossie motorsport chip on greys for example)
my car felt ALOT better when it came back from MSD and it just had a custom chip fitted to it, no closed loop ect, he just tided the fueling and ignition maps and the car performed better !!!
24-03-2008, 04:04 PM
#19
just finding my feet
i ment understand EXACTLY how it does it, not just guess
all cars these days have closed loop as standard, any car with a cat and some without, even diesels have it these days
if the ECU has closed loup control, then its just another sensor, just like a air temp/water temp sensor
AFR gauge does not measure exhaust temp !!!, its measures the air/fuel ration ( like a breathaliser for a car )
how do you know you have a narrow band already in the T34 ???, btw lambda sensors all differ from ecu to ecu, you cant just get one from a punto and plug it in the mangement
the wideband AFR gauge is just that, just like a boost gauge, you dont use a narrowband gauge on a turbo car as it dont cover the same range that a turbo car has ON BOOST so will register wrong readings
all cars these days have closed loop as standard, any car with a cat and some without, even diesels have it these days
if the ECU has closed loup control, then its just another sensor, just like a air temp/water temp sensor
AFR gauge does not measure exhaust temp !!!, its measures the air/fuel ration ( like a breathaliser for a car )
how do you know you have a narrow band already in the T34 ???, btw lambda sensors all differ from ecu to ecu, you cant just get one from a punto and plug it in the mangement
the wideband AFR gauge is just that, just like a boost gauge, you dont use a narrowband gauge on a turbo car as it dont cover the same range that a turbo car has ON BOOST so will register wrong readings
24-03-2008, 04:12 PM
#20
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ive been told by emerald to use a vw lamba, and when i spoke to msd and emerald i was told the sensor i have in my t34 is more than likely a narrow band? anyone got any links to reading up on this? cheers
24-03-2008, 04:29 PM
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so the narrow band connects up to the ecu (just the sensor straight to the ecu) and the wideband goes straight to a gauge to monitor air/fuel ratio?
24-03-2008, 04:39 PM
#26
This is were MSD took the time to do this as 3% on tickover and crusie was a waste of fuel= bore wash, crappy plugs,rough running etc
which makes for a cleaner running engine which will pass MOT's without a hitch
As said this will only work on tickover and cruise so no more overfueling on tickover and puffing black out the rear
Paul
24-03-2008, 04:47 PM
#27
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turbo cars will always be "bad" on fuel when you are boosting as you need the fuel there to mix with the extra air,just like if it was a 7 litre engine instead of a 2 litre engine. Closed loop tidies up part throttle, idle and cruise, and makes a world of difference
24-03-2008, 04:53 PM
#28
just finding my feet
will thats just what i was pointing out alot of people think " closed loop, i can rag the car and use less fuel than a vw polo bluefuel diesel"
just explaining its not the case,
if you use the car as a toy and rag the arse off it at weekends and have another car for the week is it actually worth converting a car for the closed loop conversion is what i wonder,
just explaining its not the case,
if you use the car as a toy and rag the arse off it at weekends and have another car for the week is it actually worth converting a car for the closed loop conversion is what i wonder,
24-03-2008, 05:47 PM
#30
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T6 can run closed loop fuelling, not sure if it can use a narrow band on its own, but can use a wide band.
I think it just needs the lambda target table configuring to enable it.
What version of T6, Ben?
I think it just needs the lambda target table configuring to enable it.
What version of T6, Ben?
25-03-2008, 01:41 AM
#34
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i ment understand EXACTLY how it does it, not just guess
all cars these days have closed loop as standard, any car with a cat and some without, even diesels have it these days
if the ECU has closed loup control, then its just another sensor, just like a air temp/water temp sensor
AFR gauge does not measure exhaust temp !!!, its measures the air/fuel ration ( like a breathaliser for a car )
how do you know you have a narrow band already in the T34 ???, btw lambda sensors all differ from ecu to ecu, you cant just get one from a punto and plug it in the mangement
the wideband AFR gauge is just that, just like a boost gauge, you dont use a narrowband gauge on a turbo car as it dont cover the same range that a turbo car has ON BOOST so will register wrong readings
all cars these days have closed loop as standard, any car with a cat and some without, even diesels have it these days
if the ECU has closed loup control, then its just another sensor, just like a air temp/water temp sensor
AFR gauge does not measure exhaust temp !!!, its measures the air/fuel ration ( like a breathaliser for a car )
how do you know you have a narrow band already in the T34 ???, btw lambda sensors all differ from ecu to ecu, you cant just get one from a punto and plug it in the mangement
the wideband AFR gauge is just that, just like a boost gauge, you dont use a narrowband gauge on a turbo car as it dont cover the same range that a turbo car has ON BOOST so will register wrong readings
An N/a car will still be out of range for the narrow band on full throttle.
Personally i removed closed loop and still get good fuel consumption. It just takes longer to set up, you basically just lean out the bottom end fueling to between 14.7-15.2 for better fuel consumption.
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